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SubjectRe: [PATCH 2/3] lib/vsprintf: Hash legacy clock addresses
On Mon 2018-10-08 13:05:03, Geert Uytterhoeven wrote:
> On platforms using the Common Clock Framework, "%pC" prints the clock's
> name. On legacy platforms, it prints the unhashed clock's address,
> potentially leaking sensitive information regarding the kernel layout in
> memory.
> Avoid this leak by printing the hashed address instead. To distinguish
> between clocks, a 32-bit unique identifier is as good as an actual
> pointer value.
> Fixes: ad67b74d2469d9b8 ("printk: hash addresses printed with %p")
> Signed-off-by: Geert Uytterhoeven <>

It makes sense.

Reviewed-by: Petr Mladek <>

Best Regards,

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